[Mdehrmann01]

Here's another. Aparently the JB4 says I have 68 E85 but im on pump 91

[2BIG4A3]

stage 2 and stage 2+ post 5" VRSF FMIC install (car is now 'FBO')
94 Oct on 93 map

https://datazap.me/u/khjelholt/stage-2-4some5

https://datazap.me/u/khjelholt/stage-2-45

also perhaps worth noting

before FMIC install car was targeting 14-15lbs (and nearly making) at stage 2
after it's like 12lbs

stage 2+ gauge says 16-17 but log says only 15ish

[RoughKnight]

Originally Posted by 2BIG4A3

stage 2 and stage 2+ post 5" VRSF FMIC install (car is now 'FBO')
94 Oct on 93 map

https://datazap.me/u/khjelholt/stage-2-4some5

https://datazap.me/u/khjelholt/stage-2-45

also perhaps worth noting

before FMIC install car was targeting 14-15lbs (and nearly making) at stage 2
after it's like 12lbs

stage 2+ gauge says 16-17 but log says only 15ish

Looks good, might wanna check cyl 5, maybe a new coil or plug

[riczon.335i]

Hey guys can someone check my logs please I have been chasing down this issue where I'm not meeting boost target in 3rd gear pull on my custom tune and it's been driving me crazy. I have already replaced all vac lines, new boost selenoids, checked the VRSF chargepipe it's on tight. checked the Tial BOV everything is fine there. Anyone else care to chime in on what could it be? I have re tightened all the intercooler connections. I'm about to pull my hair out lol.

My Mods:
VRSF Competition FMIC 7.5
VRSF DCI
VRSF Chargepipe with Tial BOV
n54tuning Downpipes


https://datazap.me/u/riczonh/custom-...og=0&data=3-23

https://datazap.me/u/riczonh/custom-...og=1&data=3-23

[Bimmer_Bro]

Originally Posted by riczon.335i

Hey guys can someone check my logs please I have been chasing down this issue where I'm not meeting boost target in 3rd gear pull on my custom tune and it's been driving me crazy. I have already replaced all vac lines, new boost selenoids, checked the VRSF chargepipe it's on tight. checked the Tial BOV everything is fine there. Anyone else care to chime in on what could it be? I have re tightened all the intercooler connections. I'm about to pull my hair out lol.

My Mods:
VRSF Competition FMIC 7.5
VRSF Chargepipe with Tial BOV
n54tuning Downpipes


https://datazap.me/u/riczonh/custom-...og=0&data=3-23

https://datazap.me/u/riczonh/custom-...og=1&data=3-23

What's your boost target? Are you running the correct spring in your BOV for your boost target? Have you messed with the Waste gate arm at all? Some N54 owners have over tightened the arm. Causing the waste gate to not seat fully closed.

[riczon.335i]

my boost target should be 18, I'm running the ER Tial BOV that came with my oil ER chargepipe and it has the plain spring although it is not tapped into the manifold but I plan on getting the BMS BOV Adapter. I haven't messed with the wastegate arm at all afraid to mess it up ha.

Originally Posted by Bimmer_Bro

What's your boost target? Are you running the correct spring in your BOV for your boost target? Have you messed with the Waste gate arm at all? Some N54 owners have over tightened the arm. Causing the waste gate to not seat fully closed.

[Sgop335]

Originally Posted by riczon.335i

Hey guys can someone check my logs please I have been chasing down this issue where I'm not meeting boost target in 3rd gear pull on my custom tune and it's been driving me crazy. I have already replaced all vac lines, new boost selenoids, checked the VRSF chargepipe it's on tight. checked the Tial BOV everything is fine there. Anyone else care to chime in on what could it be? I have re tightened all the intercooler connections. I'm about to pull my hair out lol.

My Mods:
VRSF Competition FMIC 7.5
VRSF Chargepipe with Tial BOV
n54tuning Downpipes


https://datazap.me/u/riczonh/custom-...og=0&data=3-23

https://datazap.me/u/riczonh/custom-...og=1&data=3-23

your wgdc pid seems to be not working. May be check the pid tables. In the second set of logs the wgdc pid doesn't max out even during spool.

[Zach1328]

Car & Mods: 2007 E90 335i 6AT (113k miles)
JB4 + MHD Pump US BEF
BMS DCI
VRSF DPs
MMP stock location inlets/outlets
Stock FMIC and LPFP
~25% E85/91 Oct

Walnut blasted 1500 miles ago. NGK 1-step colder plugs and Eldor coils installed about 5,000-6,000 miles ago. Plugs gapped to .022".

https://datazap.me/u/zach1328/jb4-mh...log=0&data=1-4

Why does my ignition timing start off so low? I understand 17+psi is a lot of boost for only a 25% E85 mix, but this happens on every single log (Maps 1, 2, and 5) even if I set a 10-12psi boost limit.

Timing just completely tanks right before boost reaches target and then some cylinders completely flat-line on shifts. It seems to mostly be cylinder 1 that flat-lines following shifts, but sometimes cylinder 1 is fine and some other random cylinder flat-lines.

[RoughKnight]

Originally Posted by Zach1328

Car & Mods: 2007 E90 335i 6AT (113k miles)
JB4 + MHD Pump US BEF
BMS DCI
VRSF DPs
MMP stock location inlets/outlets
Stock FMIC and LPFP
~25% E85/91 Oct

Walnut blasted 1500 miles ago. NGK 1-step colder plugs and Eldor coils installed about 5,000-6,000 miles ago. Plugs gapped to .022".

https://datazap.me/u/zach1328/jb4-mh...log=0&data=1-4

Why does my ignition timing start off so low? I understand 17+psi is a lot of boost for only a 25% E85 mix, but this happens on every single log (Maps 1, 2, and 5) even if I set a 10-12psi boost limit.

Timing just completely tanks right before boost reaches target and then some cylinders completely flat-line on shifts. It seems to mostly be cylinder 1 that flat-lines following shifts, but sometimes cylinder 1 is fine and some other random cylinder flat-lines.

I "think" once you add inlets and outlets you can't use the OTS maps and need a custom tune, but that may just be forum talk (or more likely I haven't had my coffee yet) somebody else can chime in

also what kind of log is that from? so different then the MHD logs i'm used to seeing

[Zach1328]

Originally Posted by RoughKnight

I "think" once you add inlets and outlets you can't use the OTS maps and need a custom tune, but that may just be forum talk (or more likely I haven't had my coffee yet) somebody else can chime in

also what kind of log is that from? so different then the MHD logs i'm used to seeing

Log is from JB4. The MHD logs are weird to me, personally.

As far as I know, no tuning changes are required. Inlets/outlets will just help with quicker spool and holding more boost later in the RPM's. They do also flow a bit more air at an equivalent PSI. As such, the tune simply needs to support the more demanding fuel flow.

When I first installed inlets/outlets I was running JB4 only and having some issues with lean AFR's and trims maxing out. I had an O2 sensor issue which I fixed and reset adaptations much to no avail. That lead me to believe I was possibly maxing the fuel flow on the JB4 alone w/ ~25% E85 mix. I then switched to the MHD pump BEF which resolved the lean issues.

Don't take this for fact as it is nothing more than a guess, but the issue resolved upon switching to the MHD pump BEF. My assumption is that I ran out of fueling with the JB4 alone. So in my case, a tuning change was required but I think most people opting for inlets/outlets are already running flash or back-end flash tunes. I actually just bumped up to a 40% E85 mix (haven't tested but it's likely E70) and it's now running a bit lean on the low end and trims are close to maxing again. Stock fuel pumps are holding up fine. Likely need to stick to a lower E85 mix, or upgrade my LPFP so I can switch to MHD E85 BEF. Will likely opt for the latter just hesitant right now since I recently put quite a bit of money into the car.

[CSSS]

Hey guys can someone check my logs please.

stage 2+, 98RON
downpipe, 7inch intercooler, chargepipe+TIAL BOV, ARMA Carbon fiber intake

V7.1
https://datazap.me/u/csss/log-157638...og=2&data=3-23

V8.0
https://datazap.me/u/csss/log-157638...og=1&data=3-23

[eastsidaz]

Originally Posted by CSSS

Hey guys can someone check my logs please.

stage 2+, 98RON
downpipe, 7inch intercooler, chargepipe+TIAL BOV, ARMA Carbon fiber intake

V7.1
https://datazap.me/u/csss/log-157638...og=2&data=3-23

V8.0
https://datazap.me/u/csss/log-157638...og=1&data=3-23

Logs look good! Nice example
Those ARMA intakes look tidy as! How do you like it?

[cantaloupe]

Car: 2009 e90 335i 6MT - 154k miles

Mods:
BMS DCI, VRSF DPs, VRSF FMIC, Fuel-it stage 2 bucketed LPFP, inlets
Running custom 91 tune from Ken @ Wedge

Relevant maintenance:
Index 12 injectors done about 25k miles ago
Eldor coils and plugs done about 9k miles ago
Walnut blasted 9k miles ago
All other major maintenance has been handled

Having some weird hesitation issues when I drive. If i'm very light on the throttle, cruising on the highway between 50-80ish MPH, the car will sometimes start "oscillating". On the tach it's barely noticeable but you can definitely feel it sitting in the car. I managed to capture it in a log:

https://datazap.me/u/caydenphipps/os...=3-21-22-23-24

Any ideas?

[335e92tx]

Originally Posted by cantaloupe

Car: 2009 e90 335i 6MT - 154k miles

Mods:
BMS DCI, VRSF DPs, VRSF FMIC, Fuel-it stage 2 bucketed LPFP, inlets
Running custom 91 tune from Ken @ Wedge

Relevant maintenance:
Index 12 injectors done about 25k miles ago
Eldor coils and plugs done about 9k miles ago
Walnut blasted 9k miles ago
All other major maintenance has been handled

Having some weird hesitation issues when I drive. If i'm very light on the throttle, cruising on the highway between 50-80ish MPH, the car will sometimes start "oscillating". On the tach it's barely noticeable but you can definitely feel it sitting in the car. I managed to capture it in a log:

https://datazap.me/u/caydenphipps/os...=3-21-22-23-24

Any ideas?

Reset adapts for lambda controls and also vanos. Then try log again. How old are O2 sensors?

[335e92tx]

Originally Posted by CSSS

Hey guys can someone check my logs please.

stage 2+, 98RON
downpipe, 7inch intercooler, chargepipe+TIAL BOV, ARMA Carbon fiber intake

V7.1
https://datazap.me/u/csss/log-157638...og=2&data=3-23

V8.0
https://datazap.me/u/csss/log-157638...og=1&data=3-23

Originally Posted by GovernUrMental

Logs look good! Nice example
Those ARMA intakes look tidy as! How do you like it?

Yep, what he said - pretty clean. You should pump the log thru - https://download.cnet.com/Virtual-Dy...-75870487.html

I would try to find a space you can log after the shift into 4th. That will put some more load on it and should let you know how close you are on timing retards and what happens when you get some heat in the IC. But in .cn I doubt you will have much of that this time of yr.

[335e92tx]

Originally Posted by RoughKnight

I "think" once you add inlets and outlets you can't use the OTS maps and need a custom tune, but that may just be forum talk (or more likely I haven't had my coffee yet) somebody else can chime in

also what kind of log is that from? so different then the MHD logs i'm used to seeing

yep,, you need a custom tune with inlets for sure.

Originally Posted by Zach1328

Log is from JB4. The MHD logs are weird to me, personally.


When I first installed inlets/outlets I was running JB4 only and having some issues with lean AFR's and trims maxing out. I had an O2 sensor issue which I fixed and reset adaptations much to no avail. That lead me to believe I was possibly maxing the fuel flow on the JB4 alone w/ ~25% E85 mix. I then switched to the MHD pump BEF which resolved the lean issues.

Don't take this for fact as it is nothing more than a guess, but the issue resolved upon switching to the MHD pump BEF. My assumption is that I ran out of fueling with the JB4 alone. So in my case, a tuning change was required but I think most people opting for inlets/outlets are already running flash or back-end flash tunes. I actually just bumped up to a 40% E85 mix (haven't tested but it's likely E70) and it's now running a bit lean on the low end and trims are close to maxing again. Stock fuel pumps are holding up fine. Likely need to stick to a lower E85 mix, or upgrade my LPFP so I can switch to MHD E85 BEF. Will likely opt for the latter just hesitant right now since I recently put quite a bit of money into the car.

If its a JB4 you really should post it at - https://www.n54tech.com/forums/forumdisplay.php?f=44

[zomski101]

Hey guys got my flex fuel base tune and did some logs over the past week. Looks like my fuel it stage 2 buckets is dropping pressure at higher ethonal blends causing my hpfp to drop causing my stft to max out causing me afrs to increase. Is this assumption correct? Hopefully someone can answer so I can order a stage 3 lpfp ASAP because with the holidays I doubt my tuner will respond in less than a week.

E32: https://datazap.me/u/zomski101/e32-2...og=0&data=3-22

E50: https://datazap.me/u/zomski101/e50-0?log=0&data=3-22

E62: https://datazap.me/u/zomski101/e63-2...og=0&data=3-22

Got a 30ee superknocking: cylinder 2 on e62 guess I should of let off when I pegged +34 on stft.

Mods: Mmp stage 3 turbos w/stock location inlets and outlets w/ 60k miles
VRSF DP, 7.5 intercooler, chargepipe w/tial BOV
Bms dci
PR coils and ngk 97506 gapped .024
Motiv flex fuel kit with new fuel lines
Fuel it stage 2 buckets
Helix 3x with in line fuel filter
xhp stage 3

[335e92tx]

Originally Posted by zomski101

E50: https://datazap.me/u/zomski101/e50-0?log=0&data=3-22

E62: https://datazap.me/u/zomski101/e63-2...og=0&data=3-22

Well, id have to spend some time looking but Id say you got some more things going on than just the LP pump when go from the 50 to the 60+ map. For one, the delta between load targets and actual are very small. And your getting some throttle closure in mid pull.

https://datazap.me/u/zomski101/e63-2...26&zoom=59-100


https://datazap.me/u/zomski101/e50-0...26&zoom=60-106

That wont cause the trim probs but it wont help. Id say get your tuner give you a little higher target to prevent the throttle closer and again.. Im not sure how much you might gain goin from the 50 to the 60 - I would watch for max mass air numbers. And try to get a little more in 4th gear.. 5000-6000 is best..

[cantaloupe]

Originally Posted by 335e92tx

Reset adapts for lambda controls and also vanos. Then try log again. How old are O2 sensors?

Primary O2 sensors were done with the new Index 12's about 25k miles ago.

Reset all adaptations through mhd and I could not get the problem to come back, seemed to drive somewhat smoother on the fwy. I have done this before though (after reflashing it resets adaptations) and it always come back eventually.

[335e92tx]

Originally Posted by cantaloupe

Primary O2 sensors were done with the new Index 12's about 25k miles ago.

Reset all adaptations through mhd and I could not get the problem to come back, seemed to drive somewhat smoother on the fwy. I have done this before though (after reflashing it resets adaptations) and it always come back eventually.

I had the surge condition on my previous n54. Started about 120K miles. Never did figure it out. Cleaned and replaced VANOS sels but it didnt really fix it long term.

I cant offer much. Mind would do it in the 1400-1600 range.. Very frustrating.. its got something to do with exhaust vanos - requested angle vs actual. The throttle plate opening and closing by like +/- 5 degrees coincides with the exhaust vanos timing.

But what is the chicken and what is the egg. Prob only bosch can tell you..

[blossom]

Hi guys. I recently purchased an e82 n55 dct and very happy with her. This car is some fun! I did a first datalog with mhd yesterday morning and am Keen to have some of you more experienced chaps take a look and tell me what you think. She is stock. Done 110k kms. No codes showing. 98ron(I think that's out fuel down here in New Zealand). Ambients temp was around 11c.

Many thanks in advance.

https://datazap.me/u/blossom/xmas-mo...og=0&data=4-17

[studio54]

General question here :

Beside cutting the midpipe and visually checking them, is there a way to check on logs that secondary cats are still in good shape ? ( a bit afraid of their health when running tuned and catless DP for a while)

If boost value/vacuum immediately goes to -11.5psi on let off after a pull does mean there is not exhaust restriction ?